'Forever' in the Bible

With antiphonal response they sang, praising and glorifying the Lord: "For he is good; his loyal love toward Israel is forever." All the people gave a loud shout as they praised the Lord when the temple of the Lord was established.

Therefore do not give your daughters in marriage to their sons, and do not take their daughters in marriage for your sons. Do not ever seek their peace or welfare, so that you may be strong and may eat the good of the land and may leave it as an inheritance for your children forever.'